He also said that he hoped the U.N. would work to de-escalate North Korea's aggression: "That's what the United Nations is for". The president himself made a decision to work the nickname into his speech just hours before he took the dais, according to aides. But we can no longer be taken advantage of or enter into a one-sided deal where the United States gets nothing in return.

There were more gasps and whispering when Trumpwarned that some parts of the world in conflict were "going to hell".

Shortly before Trump's speech, UN Secretary-General Antonio Guterres appealed from the General Assembly lectern for statesmanship to avoid war with North Korea.

"I don't think it helps with the credibility of any diplomatic initiative that one might want to put forward, certainly in our relations with our allies and trying to rally them into taking risks or making sacrifices", said Robbins who is also a fellow with the Council on Foreign Relations.

Trump applauded the U.N. Security Council for its recent votes to impose tough economic sanctions on North Korea but stressed the worldwide community must do more to isolate the Kim regime. Pyongyang tested its first two intercontinental ballistic missiles in July and claims that it can now accurately reach the US homeland, though outside experts say the North may still need more tests before its weapons are fully viable.

Did Donald Trump needlessly offend world leaders with his personal attacks on Kim Jong-un and threats to "totally destroy" North Korea?

"The United States is ready, willing and able".

"The United Nations, as the president will explain, was conceived on the idea of independent nation-states cooperating together", said the White House official, who spoke on condition of anonymity to avoid stepping on the president's message. And he hinted that his administration, which has accused Tehran of aiding terrorism in the Middle East, could soon declare Iran out of compliance with the deal, which could unravel it.

Trump faces a mid-October deadline for re-certifying Iran's compliance with the agreement.

The speech drew varying reactions from leaders.

He sat down separately yesterday with French President Emmanuel Macron and Israeli Prime Minister Benjamin Netanyahu, where they talked about Iran.

Maduro added that as he understood the speech, "Donald Trump today threatened the president of the Bolivarian Republican of Venezuela with death".

Adam Shaw is a Breitbart News politics and United Nations reporter based in NY.

Democratic Senator Edward Markey of MA, like his Republican colleague a member of the Senate Foreign Relations Committee, said Trump would do better to speak of tougher sanctions than the possibility of nuclear war. He called the Iran nuclear agreement one of the worst and most one-sided transactions the USA has ever entered into. But we also have to look at the fact that you are dealing with someone (in Kim) who is being reckless, irresponsible and is continuing to give threats not only to the United States, but to all of its allies.

The Trump administration's effort to cut costs has been met coolly by other powers, most notably Russian Federation and China, who were not among the 128 member states who signed on to a USA call for reform.